Sony Discman D-50MkII User manual

Ne
|
]
_ [REVISED
Discard D-50MkH/D-7S
SERVICE MANUAL
(No. 9-952-109-11)
previously issued.
STEP/MIN “SEC
Refer to BP-200 Service Manual issued previously for information
of rechargeable battery pack supplied with this set.
US Model
Canadian Model
‘D-SOMkII:
AEP Model
UK Model
_ E Model
_ AUS Model
FRENCH Model
| Dutch Model
Pisthan
SPECIFICATIONS
System Compact disc digital audio system General
Disc Compact disc Power requirements Lead acid battery (closed type)
Material: GaAlAs
Wavelength: 780nm
Emission duration: Continuous
Laser output: Max. 0.4mvV*
*This output is the value measured at a distance of about
1.6 mm from the objective lens surface on the Optical Pick-up
Block.
500r.p.m. to 200r.p.m. (CLV)
Laser diode properties
Spindie speed
Scan
velocity
1.2-1.4misec.
Error
correction
Sony
Super
Strategy
Cross
Interleave
Reed
Solomon
Code
Number of channels 2
D-A
conversion
16-bit
linear
Frequency
response
20--20,000
Hz‘}dB
Total
harmonic
distortion
Less
than
0.008
%
Oynamic
range
More
than
90d8
(1
kHz)
Wow
and
flutter
Below
measurable
limit
Outputs
(at
9V
input
level)
Line
output
(stereo
minijack)
Output level 1.6V rms
Load impedance over 10 kilohms
Headphones (stereo minijack)
30 mW + 30 MW at 32 ohms
CAUTION
@ Use of controls or adjustments or performance of
procedures other than those specified herein may
result in hazardous radiation exposure.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
A ON THE SCHEMATIC DIAGRAMS AND IN THE
PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
using Sony BP-200 rechargeable battery pack (supplied), 6V
Eight IEC designation LR6 atkaline batteries (size AA)
using Sony EBP-380 battery case (optional), 12V
DC IN 9V jack accepts;
Sony ac power adaptor (supplied)
For use in US, Canadian Model on
120V ac, 60 Hz
For use in UK, AUS Model on 240V ac, 50 Hz
For use in AEP, Dutch Model on 220V ac, 50 Hz
For use in E Model on 110, 120, 220, or 240V ac,
50/60 Hz
Sony DCC-120 car battery cord (optional) for use on 12V car
battery
Power consumption 2.6W dc
Dimensions
Approx. 125.927 x 125.9mm (w/hid)
(5x 1/,x5 inches)
not incl. inclined part (depth)
not inct. projecting parts and controls
Approx. 126.9 «31.5 132.5 mm (wihid)
(5x 1/,x5Y, inches)
incl. projecting parts and controls
Weight Approx. 510g (11!b 2.02), net
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITE!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET
UNE MARQUE A SUR LES DIAGRAMMES SCHE-
MATIQUES ET LA LISTE DES PIECES SONT CRITIQUES
POUR LA SECURITE DE FONCTIONNEMENT. NE REM-
PLACER CES COMPOSANTS QUE PAR DES PIECES
SONY DONT LES NUMEROS SONT DONNES DANS CE
MANUEL OU DANS LES SUPPLEMENTS PUBLIES PAR
SONY.
COMPACT DISC COMPACT PLAYER
MICROFILM
SONY.

FEATURES
@ Extremely compact size for easy carrying
@ High performance and high fidelity
@ AMS (Automatic Music Sensor) for quick location of selections
@ Search function for quick location of a desired point in a particular selection
@ RMS (Random Music Sensor) allows selections to be played in a specified
order.
© Shuffle-play function repeatedly plays selections in a random order.
@ Repeat functions for the whole disc and for a particular portion
@ Digital readout display—the track number on the disc and the elapsed or re-
maining playing time are shown on the LCD (Liquid Crystal Display) window.
TROUBLE SHOOTING GUIDE
Disc play does not start.
@ The POWER switch is set to OFF.
@ The disc is inserted with the labeled surface face down.
@ The disc is incorrectly inserted.
@ Dusty or defective disc
@ Dirty or dusty lens
@ The disc compartment lid is not closed.
@ Moisture condensation
@ The ac power adaptor is not plugged to the wall outtet.
@ Weak battery
@ The car battery cord is not firmly connected.
No sound from headphones
@ The headphones plug is not firmly connected to the PHONES jack.
No sound from speakers
@ Incorrect connections
@ The amplifier is not turned on,
Skipping of sound
@ Dirty or defective disc
@ Dirty lens
@ Strong vibration
MAINTENANCE
CLEANING THE CASING ‘
Clean the casing with a soft cloth slightly moistened with water or mild dete:
gent solution. Do not use any type of abrasive pad, scouring powder or solve=i
such as alcohol or benzine as they may mar the finish of the casing.
CLEANING THE LENS
If you have accidentally touched the lens with a dirty finger or the dust ont t
lens prevents the set from operating properly, open the disc compartment ti
with the OPEN button and clean the lens.
To remove dust
Blow on the lens a few times with a commercially available blower, brush t t
dust away in the direction of the arrow, then blow on the lens again.
Blower
NOTES ON COMPACT DISCS
O.
Handle the disc by its edge, and |
keep the disc clean do not touch tf
rainbow colored surface.
apa | Do not stick paper or tape nor wer?
anything on the labeled surface.
Do not expose the disc to direct sunlight or heat sources such as hot air duct
nor leave it in a car parked in direct sunlight where there can be a considera t?
rise in the temperature.
Before playing, clean the disc with the optional
cleaning cloth.
Wipe the disc from the center out.
Do not use solvents such as benzine, thinner,
commercially available cleaners or anti-static
spray intended for analog discs.
After playing, store the disc in its case.
ey

perpen
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ae
gap
eee
et
pny
EET
FPR
OT
pre
eee
epee
ce
omens
Servicehilfe
Datum:
25.08.86
Ref.:
DA-O3886
Modell:
D-SOMKII
(D-7S)
DISC-TELLER
DREHT
SICH
NICHT
Code:
Has/scho
Fehlererscheinung:
Der
Disc-Teller
drenht
sich
nicht,
obwohl
der
Disc-Motor
lauft.
Ursaches
Das
Yahnmrad
des
Disc-Tellers
ist
auf
der
Welle
ver-
ruts\ent.
Gbhilfe:
Zahnrad
des
Disc-Tellers
aut
die
Messinghiilse
der
Welle
he
schieben,
Sicherungslack
auftragen
und
das
Zahnrad
mit
}
dem
Stopper
festsetzen.
Varfahrens
1.
Disc-Teller
in
Ffeilrichtung
driicken
und
Zahnrad
aufstecken
(siehe
Bild
1).
Zahnrad
ne
:
AE
Poa
4
\pise-Teller
Se
Messinghiilse
so
weit
herunterdriicken,
dai
sie
biindig
mit
der
Oberflache
des
Zahnrades
abschliefit
(Bild
2).
tehatoen)
Fephod a2:
Arieibeatiies
|
bo
Abteilung
Technische
Information
a
“SONY
DEUTSCHLAND.
GmbH,
Hugo-Eckener-StraBe
20,
5000
Koln
30,
Tel.:
(02
21)
5966-1

SONY
Servicehilfe
|
Sicherungslack
auf
die
Anschiufistelle
auftragen,
dabei
den
Disc-Teller
drehen.
aN)
Sicherungslack
4.
Disce-Teller
entsprechend
Hild
1
nach.oben
driicken
und
gleich-
zeitiqg
den
Stopper
1
anbringen
und
mit
dem
dazugehorigen
Stabchen
fest
andritcken.
Reparatursatz
-
ET.-Nr.:
X-4907-035-1
Abstandsstiicke
so / we |
Stabchen 74
FTrvrcsineenoe
snot
HULL
——————
5.
Hoheneinstellung
des
Disc-Tellers
Konterschraube
entsprechend
der
Dicke
des
Abstandsringes
justieren;
die
Disc-Tellerhdhe
lafst
sich
durch
Abstandsstiicke
verandern.
(Im
Reparatursatz
enthalten)
Zahnrad
Disc-Teller
Finstellverfahren:
1.
Konterschraube
um
120
Grad
nach
rechts
dre-
hen.
2.
Konterschraube
mit
Lack
sichern.
Anmer
kung:
Die
Konterschraube
nicht
zu
fest
anziehen,
da
Sich
sonst
die
Héhe
verandert,
sobald
der
Schraubendreher
herausgezogen
wird.
Abteilung
Technische
Information
a
SONY
DEUTSCHLAND
GmbH,
Hugo-Eckener-StraBe
20,
5000
KOin
30,
Tel:
(0221)
59
66
-1

Sa
'— CAUTION FOR ELECTROSTATIC BREAKDOWN —
NOTES
ON
HANDLING
THE
OPTICAL
PICK-UP
BLOCK
(KSS-110G)
The
laser
diode
in
the
optical
pick-up
block
may
1.
Place
a
conductive
sheet
on
the
workbench.
suffer
electrostatic
breakdown
because
of
the
poten-
(The
black
sheet
used
as
repair
parts
wrapping).
tial
difference
generated
by
the
charged
electrostatic
2.
Place
the
set
on
the
conductive
sheet
so
that
load, etc. on clothing and the human body. } the chassis touches the sheet. (This makes it the
The
printed
matter
below
is
included
in
the
repair
same
potential
as
the
conductive
sheet).
arts,
During
repair,
use
the
procedure
in
the
printed
:
ca
P 7
3.
Place
your
hands
on
the
conductive
sheet.
(This
matter.
:
The
flexible
board
is
easily
damaged
and
should
be
makes
them
the
same
potential
as
the
sheet).
handled
with
care.
4.
Remove
the
optical
pick-up
block.
The
following
method
is
an
example
for
reference
5.
Perform
work
on
top
of
the
conductive
‘sheet.
purposes:
Be careful that clothing does not touch the
optical pick-up block.
Printed Matter Included in the Repair Parts
When
opening
or
repairing
the
unit,
the
procedure
for
grounding
as
follows
is
required
to
prevent
damage
caused
by
static
electricity.
Grounding for the human body
Be
sure
to
put
on
a
wrist-strap
for
grounding
(with
impedance
lower
than
10®
(2)
whose
other
end
is
grounded,
The
strap
works
to
drain
away
the
static
electricity
build-up on
the
human body.
Grounding
for
the
work
table
Be
sure
to
lay
on
the
table
a
conductive
sheet
(with
impedance
lower
than
10°
Q)
such
as
sheet
of
copper, which
is grounded.
As
static
electricity
build-up
on
clothes
is
not
drainded
away,
be
careful
not
to
let
your.clothes
touch
the
unit.
Handling the flexible board
The flexible board is easily damaged and should be handled with care.
@ Wrist-strap
for grounding
The unit

Chip Component Indications
The official specifications which are presently indicated
are EIAJ standard.
(1) MELF (leadless): EIAJ RC-8001
(2) Square chip components (laminated ceramic):
EIAJ RC-3699. Square chip resistors are presently
under study by EIAJ.
The following explanation covers square chip components
(MELF omitted).
1. 2-letter Method (EIAJ RC-3699)
e Letter combination:
@ Letter meaning:
letter + 1 number
letter = effective numeric
“number = multiplier
* The units used are pF for capacitors and Q (ohm) for
resistor.
(This is mainly used for Symbol and Numeric and Multi-
plist capacitors.)
ESOC nG cone
fwamere|t [i.fra[valis|ie|tal2 [ealaaiaa|
juste [wwe otal s |r} uly (wl x!
[Numeio|3_|3.3]36/2.0]4.9|4.7/6.1[5.6]82]6¢/7.5|
Se eee
1x 10!
E3 1.5 x 10°
= 10 pF (or, 1022)
= 1500 pF (or, 1.5 kQ)
2. 3-number Method
(Mainly used for chip resistors)
° Number meaning:
Ist and 2nd number = effective numeric
3rd number = multiplier of 10
. Unit: .pF for capacitor, for resistor —
1000092 = 10 kQ
(or, 0.01 uF)
2200002 = 220 kQ
(or, 0.22 uF)
@ Ex.: 103 10 x 10°
224 22 x 10*
3. 4-letter Method (used for capacitor)
@ Letter combination:
@ Letter meaning:
3 numbers + 1 letter
number = effective numeric +
multiplier of 10
(same as 3-number method)
letter = capacitor response
® Symbol and Response
( For temperature compensation )
emis Te [*[* [8] [vor
[Rewonm [os] ra [na [se [ra [us [st |
A is temperature coefficient tolerance, and is G, H,
J,K.
(For high dielectric constant) —
symoo [ [2
Frenne |e [F |
@ Ex.:
47 a
m= 47x 10° = 47000pF = 0.047uF F response
[Fe |p sss = 150pF
22
?|> 22x10? = 2200pF
RA response
SL response

Replacing chip components
All chip components should be connected and disconnect-
ed, using a tapered soldering iron [temperature of the iron
tip: less than 280°C (536°F)], a pair of tweezers and braid-
ed wire.
Precautions for replacement
1. Do not disconnect the chip component forcefully.
Otherwise, the pattern may peel off.
2. Never re-use a disconnected chip component. Dispose of
all old chip components. _
3. To protect the chip component, heating time for attach-
ing the component should be within 3 seconds.
© Removing chip components
(1) Removing solder at electrode
Remove the solder at the electrode, using a thin
braided wire. Do not remove the solder of the part
(chip component) attached adjacent to the electrode.
Pattern Soldering iron
Braided wire
(2) Disconnecting chip components
Turn the tweezers with the soldering iron alternately
applied to both electrodes, and the chip component
will be disconnected. Take careful precautions while
disconnecting, because if the chip component is force-
fully removed the land may peel off.
_ Never re-use a disconnected chip component.
Tweezers —
Turn
(3) Smoothing the soldered surface hoied
After disconnecting the chip component, remove the
solder by using a braided wire to smooth the land
surface. ;
© Connecting chip components
The value of chip components is not displayed on the
main body. Take due precautions to avoid mixing new
chip components with other ones.
(1) Applying solder to land on one side
Apply a thin layer of solder to the land on one side
where the chip component is to be connected. Too
much solder may cause bridging.
Small quantity of solder
a
(2) Speedy soldering
Hold the chip component at the desired position,
using tweezers, and apply the soldering iron in the
arrow-marked direction. To protect the chip compo-
nent, heating time should be within 3 seconds.
oA
Soldering iron
Land Printed circuit board
(3)
Speedy
soldering
of
electrode
on
the
other
side
Solder
the
electrode
on
the
other
side
in
the
same
—
way
as
in
(2)
above.
:

Flexible
Circuit
Board
Repairing
é
To
make
thermal
controller
of
soldering
iron
connector
1. Keep the temperature of the soldering iron at
270° + 10°C during repairing.
You can maintain the temperature of the
soldering iron around 270°C by using the ther-
mal controller as illustrated on the right.
2. Do not touch the soldering iron more than 4
seconds or 3 times on the same conductor of
the circuit board.
3. Do not apply force on the conductor when
soldering or unsoldering.
(voltage resistant:
1.4kV)
_ Part No.
8-719-210-66
Tip of soldering iron
solder
good wrong
eee eee
ae
OR
EEA
COE
soldering iron
= ASS
wind insulating tape.
===
PC BOARDS/SWITCH/MOTOR LAYOUTS
optical pick-up block (FOP)
sled motor
(M901)
open/close
switch
limiter
board
KSS-110G
(S802) servo board
laser on switch
(S507)
LCD module
(ND801) P
Power switch
(S401) ,
spindle motor
(M902)
SW board
limit switch
(S807)

SERVICE MODE (service program)
As shown on page 17, the program on
this set selects either service program
routine or normal routine after power
supply is connected and a RESET
signal enters. When it enters service
program routine, the microcomputer
brings the necessary job from each
subroutine corresponding to the key
input, and executes that job. Opera-
tion check can be performed efficient-
ly using this mode. The operation
method of service mode is explained
below. ,
iS MKEY
PRESSED?
s809 CHECK
(IC8o1 ‘®)
YES
_ SERVO ALL OFF
POWER ON
INITIAL SETTING
LCD LIGHTING START
iS PERKEY
—-— POWER ON RESET
PRESSED?
YES
$806
CHECK
(1c801
(14))
a
FOCUS
ON
ARE
SPINDLE
veg
“
MOTOR
ROTATED?
(PAGE
9
FIG.
4)
.
NO
SPINDLE
AUTO
IS
PRIOR
Ke
KEY
PRESSED?
YES
$807,
808_CHECK
(1C801
42),
43)
NO
TRACKING
SERVO TURNS
OFF
AND OPTICAL PICK-UP MOVES.
IS’ KEY-MODE
KEY PRESSED? YES
S805 CHECK
(1C801
)
NO TRACKING, SLED SERVO ON
IS REMAIN KEY
PRESSED?
$804 CHECK
(IC801 @6))
YES
LCD. DISPLAY STOP
Fig. 1 Service Program Flow Chart
—7J—-

NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to
be focused on the disc reflective surface by the objec-
tive lens in the optical pick-up block. Therefore,
when checking the laser diode emission, observe,
from more than 30 cm away from the objective lens,
Laser Diode Check Procedure
The laser diode on this set will not emit unless the
top panel is closed and S501 (terminal sorting type),
$802 (leaf SW type) are turned. on. :
Focus search can be operated in service mode even if
S802
is
OFF,
so
that
the
laser
diode
will
emit
if
$501
(terminal shorting type) are turned on in this mode.
The laser diode is checked using the current value
which flows to the laser diode inside the FOP.
Procedure 1 (service mode or normal operation).
Check the laser diode emission with the eye.
1, Open upper panel and turn $501, 802 on as
Fig. 5. In the service mode, turn on $501
only.
2. Press the pill key.
3. Observe the objective lens and confirm that
the laser diode is emitting light. At this time,
the laser diode goes on about 3 seconds due
to focus search. If it does not, APC circuit
or FOP is defective.
Short-circuit with tweezers.
Procedure 2 (service mode or normal operation).
Check by the curent with flows in the laser diode.
1. Close the top panel.
2. Remove the main board and read the current
value on the label affixed to the FOP.
(Label on FOP)
SONY Japan
LASER POWER 0.4mW MAX.
KSS-110G
07740 _ current value
This means 49.9 mA,
The current value varies with the set.
3. Connect a VOM as shown in Fig. 6.
4. Press the > key,
5. Calculate the current. by the VOM reading.
VOM reading (V) + 19.5 = current (A).
ex. VOM reading = 0.97 V ;
0.97 = 19,5 = 0.0497 (A) = 49.7 (mA)
6.
Confirm.that
the
ammeter
reading
is
within
the
range
given
below,
value
on
label
}mA
(25°C)
variation relative to temperature:
0.4 mA/°C |
(Current increases when temperature rises
and
decreases
when
it
drops.)
If
the
value
is
more
than
the
range
given,
APC
circuit
has
been
defective
or
the
laser
diode
has
deteriorated,
If
it
is
less,
APC
circuit
or
FOP
is
defective.
VOM
(dc 3 V range)
Fig. 6 VOM Connection

LOCATION AND FUNCTION OF CONTROLS
Refer to the pages indicated in @ for details.
|
POWER switch
Set to OFF when transporting the unit so that the
player wilt not operate, even if an operation key is
accidentally pressed.
VOLUME (headphones
volume) control @
LINE OUT jack (stereo minijack)
Can be connected to an amplifier or
a tape recorder, with the supplied
connecting cord.
DC IN 9V (external power
input) jack
Connects the optional ac
cord.
Display window
Play mode indicators
No indicator: Normal play
ruert
(oie £t
TRACK indicator @
Shows the track number of the
selection being played or the
remaining number of selections
on the disc.
AMS indicator @
STEP/MIN (minute) indicator @ @
Shows the elapsed playing time
from the beginning of a selection
in minutes or during the RMS
memorization process the order in
which selections are memorized.
SEARCH indicator @
SEC (second) indicator -
PHONES (headphones) jack @
(stereo minijack)
power adaptor,or.car battery
Indicate the following play modes.
ALL: All repeat play
A+B: A+B repeat play
BATT
(battery)
indicator.
_
SHUFFLE:
Shuffle
repeat
play
Appears
during
play
or
pause.
RMS
[MEM]
:
Memorization
ofa
When
the
batteries.
are
weak,
displayed
selection’s
the
indicator
flickers.
track
number
.
RMS:
RMS
play
Lens
The laser beam is
emitted from this point
to pick-up the signal
on the disc.
Disc compartment
Insert a compact disc
here.
p11 (play/pause) key @
OPEN button @
Press this button to
open the disc compart-
ment lid.
@ (stop) key
Press this key to stop
play. The power will be
turned off.
Display window Q)
Safety slot
Do not put
anything in
this slot. If
the disc com-
partment tid
is not firmly
closed the
laser beam
emission wi
ined.
not be conta-
AMS (Automatic Music Sensor)/Search key
® ®
Press the <@ or P| key to locate the be-
ginning of the desired selection while the
AMS indicator is displayed.
Press the <@ or P| key to locate the de-
sired point in a particular selection while
the SEARCH indicator is displayed.
KEY MODE key ®
Press this key to select either the AMS or
i Search function.
PLAY MODE key © ®
Press this key to select one of five play modes:
Normal, ALL repeat, A<—B repeat,
SHUFFLE repeat, RMS play.
Each time the key is pressed, the previous
mode is cancelled and the next mode is
activated.
REMAIN/ENTER key ©: ®
Press
this
key
and
the
time
counter
shows
the
time
(preceded
by
a
minus sign) which remains before the end of the last selection.
For
AB
repeat
play
and
RMS
play,
use
this
key
to
memorize.
HOW TO RECHARGE THE BATTERY PACK
Supplied
ac power adaptor
> to a wall outlet
CD player
Batt ack
enone to DC IN 9V
REMAIN indicator @

DISC PLAYING
Make sure that
the POWER
switch is set
2 Press the OPEN
button and insert a
compact disc with
the label surface up.
Close the disc
compartment lid.
3 Press the 18 key.
Play will start from the beginning of the disc.
Turn the VOLUME control
to adjust the headphones
volume.
STEP MIN SEC
NF
When
the
player
reaches
the
end
of
the
last
selection
of
the
disc,
the
indications
on
the
display
window
will
disappear
after
a
few
seconds
and
the
disc
will
stop
rotating.
rut
uot
TRACK
rrterte
cubsedy ft AMS
STEP/MIN SEC
Elapsed playing time of the
selection being played.
we,
Track number
Do
not
press
the
®II
key
when
there
is
no
disc
inserted,
as
it
may
cause
severe
noise.
TO STOP DURING PLAY
Press the m key.
The
indications
on
the
display
window
will
disap-
Pear
after
a
few
seconds
and
the
disc
will
stop
rotating.
TO PAUSE DURING PLAY
Press the mal key.
The
time
counter
on
the
dispiay
will
flicker.
To
release
the
pause
mode,
press
the
IE
again.
USING THE TIME COUNTER
Each
time
the
REMAIN/ENTER
key
is
pressed,
the
display
shows
the
elapsed
playing
time
or
the
re-
maining
playing
time.
TO MONITOR THE ELAPSED PLAYING TIME
Generally,
the
time
counter
shows
the
elapsed
Playing
time
from
the
beginning
of
the
selection
in
minutes
and
seconds.
Track number Time counter
Shows 1 minute 17 seconds
have elapsed from the
beginning of the fifth selection.
meee
ute
STEP/MIN SEC
When
a
new
selection
starts,
the
counter
is
reset
to
“00:00”
and
then
starts
counting
again.
.
If
the
selection
has
a
blank
space
at
its
beginning,
the
counter
is
reset
to
nega-
tive
number
such
as
‘“~00:02”
or
“00:01”.
TO MONITOR THE REMAINING PLAYING TIME
When
the
REMAIN/ENTER
key
is
pressed,
the
counter
shows
the
remaining
number
of
selections
and
the
remaining
time,
each
preceded
by
a
minus.
Minus
Shows 1 selection and 7
a }
a}
47
zing
minutes
and
12
seconds
are
‘ aes pia
feck
ae
remaining
before
the
end
of
the
ENTER
Tk |) disc.
Note:
During
repeat
play
and
shuffle
play
the
counter
shows
the
remaining
selections
and
time
as
if
the
player
is in
the
normal
playling
mode,
rather
than
those
actual
remaining.
When
the
REMAIN/ENTER
key
is
pressed
during
RMS
play,
the
following
appears
on
the
display.
Caw RMS
TO
SEARCH
FOR
A
PARTICULAR
SELECTION
—AMS (Automatic Music Sensor) function
During play or pause, proceed as follows.
AMS indicator
When it is not displayed,
press the KEY MODE key.
KEY MODE key
faary]
Oe O315 ane
STEP_MN SEC
To search for a previous selec-
tion
When the eg key is pressed
once, the beginning of the
selection being played is
searched for.
When the key is continuously
Pressed, the previous selec-
tion is searched for.
To search for a selection
ahead
When the | key is pressed
once, the selection after the
one being played is searched
for.
When the key is continuously
pressed, the selection after
that will be searched for.
=12
After the last selection the
TRACK indicator will not
change.
@
In
the
pause
mode
press
the
|<<
or
BR]
key
by
observing
the
TRACK
indicator
on
the
display.
The
player
pauses
at
the
beginning
of
the
desired
selection.
@ During RMS play, AMS operates in the memorized order.
TO
SEARCH
FOR
A
PARTICULAR
POINT
IN
A
SELECTION
~—searcu
tunction
During
play
or
pause,
proceed
as
follows.
SEARCH indicator
When it is not displayed,
press the KEY MODE key. KEY MODE key
Be
vane
GF 1G scarce
STEP wn SEC
To go back at a high speed
Keep the @<@ key pressed.
Monitoring the high speed sound
to locate the desired point, re-
lease the key to restart the play.
To go ahead at a high
speed
Keep the pmp|
pressed.
Monitoring the high
speed sound to locate
the desired point, re-
lease the key to re-
start the play.
key
In pause mode
@
The
search
speed
is
higher
than
during
play.
@
Locate
the
desired
point
by
observing
the
time
counter
on
the
display
as
there
is
no
sound
to
be
heard.
©
Press
the
II
key
to
restart
the
play.
What are these indications?
GD
SEARCH SEARCH
PES
This appears if you continuously
press the mp key at the end of
the disc.
To return to a TRACK indication,
press the <q key.
4
This appears if you continuously
press the |< key at the begin-
ning of the disc.

REPEAT PLAY
TO
REPEAT
THE
WHOLE
DISC
—all
repeat
play
During
play
or
pause,
press
the
PLAY
MODE
key
repeatedly
until
=e) —
the
ALL
indicator
appears
on
the
Hts
os:es
Zoo
=
display
window.
Tae
TSTEP
SEE
When the disc reaches the end of the last
selection, the player wil! automatically go
back to the beginning of the first selection,
and play will restart.
To
release
the
repeat
mode,
press
the
m™
key.
TO
REPEAT
PLAY
BETWEEN
TWO
DESIGNATED
POINTS
—A<—B
repeat
play
1 During play or pause, press the
PLAY
MODE
key
repeatedly
as
Cid
until
the
A
indicator
appears
go?
os:e}
Sa
on
the
display
window.
Teace
ster
en
see
{
75
id
s
|
2 Locate the point from which
the
repeat
play
starts
(point
A)|
[f=
4%
>
mh
using
the
AMS
or
Search
func-
ai
ot
e3
ae
tion
and
press
the
REMAIN/
ENTER key.
The A indicator stops flickering show-
ing that point A is memorized and the B
indicator starts flickering.
3
Locate
the
stopping
point
(point
B)
and
press
the
REMAIN/ENTER
key.
The
B
indicator
stops
flickering
showing
that
point
B
is
memorized.
The
disc
goes
back
to
point
A
and
play
starts.
During
pause,
press
the
Bia
key
to
start
the
play.
To
release
the
repeat
mode,
press
the
™
key.
MORE ABOUT A-—B REPEAT FUNCTION
To repeat only one selection |
Press the BI key to set the player in pause mode.
Press the PLAY MODE key repeatedly until the A indicator appears on the
display window.
Locate the beginning of the desired selection (point A) using the AMS func-
tion and press the REMAIN/ENTER key.
Press the BB key once to locate the beginning of the following selection
(point B) and press the REMAIN/ENTER key.
5 Press the IE key again to start playing.
af © N=
Repeat play of the last selection of the disc cannot be done this way.
Use the Search function (refer to “A +> B repeat play”).
To repeat while eliminating an unwanted portion (jump repeat) |
1 Press the m1 key to set the player in pause mode.
2 Press the PLAY MODE key repeatedly until the A indicator appears on the
display window.
3 Locate the beginning of the selection following the one to be eliminated
(point A) using the AMS function and press the REMAIN/ENTER key.
4 Locate the beginning of the selection to be eliminated (point B) and press
the REMAIN/ENTER key.
The TRACK indicator returns to point A.
5 Press the mil key to start playing.
Example: To eliminate the 3rd selection
cor
os
5H -=". $4
»> =o
Beginning
of
“en
mea
0
LQ
End
of
the disc we diee
“
aes c——_»
+ Beginning Beginning of the
4 th selection
J
TO PLAY THE SELECTIONS IN A RANDOM
ORDER
—Shuffle play
in this mode, there is no way of knowing which selection will be played next. After all of the selec-
tions on the disc have been played in a random order, they are reshuffled so that you can listen to the
same disc continuously, but with the selections played in a different order each time.
Se
During piay or pause, press the
PLAY MODE key repeatedly
until the SHUFFLE indicator 2
appears on the display. Bel te
Shuffle play starts from the following se- bead
lection. Track number
To release the shuffle play
mode, press the @ key.
AMS and Search operation during shuffle play
ed key , A bP] key
(with each press)
Beginning of the following
selection 2
(with continuous press)
Ahead to the following
selection
Indicator
AMS
Beginning of the
selection being played *
SEARCH
*You
cannot
return
to
the
previous
selection.
When
the
unit
reaches
the
beginning
of
the
selection
being
played,
play
starts
automatically.
TO PLAY THE DESIRED SELECTIONS IN THE
DESIRED ORDER
—RMS (Random Music Sensor) play
With the RMS feature, up to 16 selections can be played in the order you prefer.
HOW TO MEMORIZE SELECTIONS
1 During play or pause, press the
PLAY MODE key repeatedly ———
until the RMS [MEM] indicator a
appears on the display win- Bo
> 00
ue ENTER MODE —
STEP WN SEC REMAIN |] PLAY KEY
a)
dow. oa
; Track Playing
The STEP/MIN indicator shows 01. number order
If you press the BBE key in the pause
mode, the player will stop.
2 Press the KEY MODE key so
that -the AMS indicator ap-
pears.
3 Press the <q or ® | key and locate the beginning of the desired selection
by observing the TRACK indicator on the display.
4 Press the REMAIN/ENTER key.
The selection shown by the TRACK indicator is memorized as the first selection and the
STEP/MIN indicator changes to 02.
Repeat steps 3 and 4 to memorize up to 15 other selections.
When 16 selections have been memorized, the STEP/MIN indicator will return to 01. If you continue to
memorize other selections, the last selection memorized will be cleared and the new one memorized
in its place.
HOW TO START RMS PLAY
Press the B41 key. (During pause, press the Pi key twice.)
The MEM indicator will dlasppes and the selections are played in the memo-
rized order.
To release the RMS play, press the @ key.
Note
As the RMS searches for the next memorized selection very quickly, there may be little blank space
between selections. When the selections played with.the RMS feature are recorded on the tape, the
AMS function of the cassette player may not be activated.

SECTION 1
- OUTLINE
1-1, CIRCUIT DESCRIPTION
[SYSTEM CONTROL 4-BIT MICROCOMPUTER]
Table 1 explains the ports and Fig. 7 is the program
flor chart. When power is applied to the set, a RST
signal is applied to the microcomputer and the pro-
gram starts. First judgement is made whether to go
to service mode. (Service mode is explained on page
7-9.) When it goes to a regular mode, clock oscil-
lation is stopped, stand-by occurs, and waiting for
PB/PAUSE input results. Clock oscillation is stopped
for saving power consumption.
- When the PB/PAUSE button is pressed, the program
continues on'to'the main routine, and continues run-
ning on the main loop until the STOP button is
pressed or until some kind of trouble causes emer-
gency stop to be generated.
The SUB-Q signal is applied to the serial data input
port (SI), WFCK to the shift clock input (SC) and
SCOR to external interrupt input port (IRQ), and
SUB-Q is read into the RAM by the interrupt pro-
cessing routine in the main loop.
The following are the three types of interrupt pro-
cessing:
(1) External interrupt: by SCOR(75 Hz)
(2) Timer/Counter overflow interrupt: by built-in
counter (50 Hz)
(3) Serial Buffer F/E (FULL/EMPTY) interrupt:
executed when 4 bits of SUB-Q accumulate
Priority order is by number, in order from the lowest,
and interrupt begins from high priority interrupt after
the currently executed command is completed. On
this set, first the loop turns at 50 Hz (20 msec) by
interrupt (2) until servo is applied. Then when SUB-Q
can be read in, interrupt (1) causes the loop to turn at
75 Hz (13.3 msec). Then SUB-Q 4 bit processing
(sent from register to RAM) is performed at approxi-
mately 600 usec cycles by interrupt (3),
The above is an outline of the program, The main
program features are listed below.
(1). Focus search is done 3 times.
(2) For normal STOP, FOP is not stopped above the
TOC area as before, but at music data area near
the innermost circumference, For emergency
stop due to OPEN or. BATT EMP, it stops right
‘away, where it is. During PLAY, the FOP
searches for TOC and reads it, then begins play-
back,
(3) Search operation (music search) is done by per-
forming 1 track jump three times ina row. _
(4) Service program is built-in. (Refer to next
chapter.)
(5) FZC (Focus Zero Cross) is only detected when
the lens goes up.

Signal Name
Table 1 Pin Functions
Function
2
Not used.
OUTPUT
INPUT
‘HEADPHONE output are muted mode at “‘H”’.
normal
mode
to service
mode
when
RST
input
is
supplied
at
Muting
signal
output
pin.
CX23035
(IC601),
LINE
output
and
Normal operation:
Battery
down
signal
input
pin.
When
this
pin
goes
“L”’,
it
detects
running out of the battery.
Service mode:
This
input
pin
switches
the
operation
mode
on
the
set.
Goes
from
pe
ba
BATT-W
INPUT
Battery
voltage
reduction
input
pin.
When
power
supply
voltage
is
.
less
than
5.9
V,
“L”
is
input
WFCK
S-LIMIT
=)
—
INPUT
INPUT
Shift-clock
input
pin
of
serial
1/O
(SI).
This
is
a
clock
signal
to
read
SUB-Q
signal.
WFCK
is
input
from
CX23035
(IC601).
Not used.
This
pin
inputs
the
result
of
CRC
of
SUB-Q
from
CX23035
(IC601).
and
judges
if
there
is
no
error
in
SUB-Q
signal
read
at
WFCK.
“H”:
correct
“L”:
error
Serial
I/O
data
input
pin.
SUB-Q
signal
(information
about
the
music
address
and
emphasis,
etc.)
is
input.
Limit
switch
(S801)
input
pin.
When
this
pin
inputs
““L”,
detects
FOP
reaching
the
inner
most
circumference.
——
R13
S-OPEN
INPUT
OPEN/CLOSE
switch
($802)
input
pin.
When
this
pin
inputs
“L”’,
detects that the upper panel is open.
Ri4
|
STOP
INPUT
switch
input
pin.
This
pin
detects
fall
of
input
and
goes
to
the
set
stand-by
mode.
:
R15
FR
INPUT
|44
switch
(S808)
input
pin.
KO
FF
INPUT
P>Pi
switch
(S807)
input
pin.
Kl
|
PB/PAUSE
INPUT
PHT
switch
($806)
input
pin.
K2
|
K-MODE
INPUT
AMS/SEARCH
switch
(S805)
input
pin.
K3
+
REM/ENT
INPUT
REM/ENT
switch
(S804)
input
pin.
R8
SENSE
INPUT
‘Input
pin
of
SENSE
output
of
CX23035
(IC601)
and,
CXA1
023M
(IC501).
When
fowarding
serial
data
to
CXA1023M,
the
signal
which
monitors
the
mode
of
the
specified
servo
circuit
is
input.
R9
|
FoK
INPUT
:
Focus
servo
permission
input
pin.
This
pin
detects
the
focus
at
“L”’.
R10
GFS
uh
INPUT
Input
pin
of
Guarded
Frame
Sync
of
CX23035
(IC601)
“L”
is
input
|
when
CX23035
reads
the
data
of
the
disc
correctly.
SO
P-MODE
PLAY
MODE
switch
(S803)
input
pin.

1/0
Function
OUTPUT
When
iain
the
serial
data
to
CX23035
ariel
and
CXA1023M
(1C501),
LATCH
signal
is
input.
OUTPUT
When fowarding the.serial data to CX23035 (IC601) and CXA1023M
(IC501), CLOCK signal is input.
OUTPUT
Serial data output pin to CX23035 (IC601) and CXA1023M (IC501).
OUTPUT
Normally “H”.
normal tracking mode is set by going to “L”’.
for a limited time when detecting TZC (Tracking Zero Cross) rise or
Output pin to CKA1023M (IC501) at 1-track jump.
The direction of jump level is reversed at “L’’. Next,
This pin outputs “L”
Vss
ee
Ground pin
Not used.
OUTPUT
CX23035 (IC601) and CXA1023M (IC501) reset signal output pin.
Each IC is reset by outputting “L”’.
OUTPUT
OUTPUT
OUTPUT
OUTPUT
: Power ON
Segment output pin.
This output pin maintains inert motor rotation. This pin outputs ©
“HH” during the interval from motor begins turning to FOP focus.
Emphasis switching output pin of analog circuit. This pin outputs |
due to an emphasis signal in SUB-Q signal, and switches the analog
circuit.
This output pin controls power ON/OFF.
“HH”:
Power OFF
OUTPUT
Common output pin (4 partition display).
——
OUTPUT
Power supply pin.
Power supply pin for LCD bias.
OUTPUT
This control pin cuts off the current flowing to LCD bias resistor in
stand-by mode.
OUTPUT
Output pin for clock generation circuit.
INPUT
Input pin for clock generation circuit.
INPUT
External reset signal input pin. This set is reset at “L”’.
INPUT
This pin cancels the stand-by mode on the set.
The stand-by mode is canceled by rising ( f_) of input.
16—
Interrupt input pin. SCOR (sync signal with SUB-Q) is input from
CX23035 (IC601) and detects the tip of SUB- -Q signal by detecting
fall (4 |) of input.

NO
YES
YES
NO
POWER SUPPLY | -
CONNECTION
a a eo POWER ON RESET
; YES SERVICE PROGRAM
SERVICE
MODE
EXECUTION
:
? (See page 7)
INDICATES 00
NO
OUTPUT PORTS
INITIALIZE
LCD OFF
BECAUSE OF
CLOCK OSC STOP (eee MODE.
—~
IS PEN KEY
PRESSED?
$806 CHECK
(1C801 63)
YES
RAM CLEAR
OSC ON
TOP
PANEL OPEN?
$802 CHECK
(1C801 )
NO-
IS mKEY
PRESSED?
$401, 809 CHECK
(1C8014 )
NO
ISP EE KEY
PRESSED?
$806 CHECK
(1C801 (14))
YES
MICROCOMPUTER
INITIAL SETTING
MAIN
(epee IF BLSNPeEN)
(S RELEASED.
(
FOP MOVES INWARD
$801 (LIMIT SWITCH) ON
FOP MOVES OUTWARD
SLIGHTLY.
{TO THE OUTWARD
) \OF TOC
DISC ROTAES SLIGHTLY
(POWER SAVE)
FOCUS SEARCH
(FZC, FOK CHECK)
OK
: _ FOCUS SERVO ON
TRACKING AND SLED
SERVO ON
DISC RUN-UP
(GFS CHECK)
SWITCH IS ON OR OF
CONFIRAM IF on OFF]
F
ON THE RIGHT SIDE.
DISC ROTATES NORMALLY
AND FOP MOVES INWARD
TO READ TOC.
(INDICATES 01)
INDICATES 07 0: 00
AND PLAY STARTS.
(MUTE 1S RELEASED)
Fig. 7 Program Flow Chart
NS STOP
NG STOP
@ SERVICING NOTE
Charge Circuit Check
1.
Connect
a
10k
resistor
as
shown
in
Fig.
A.
(Between pin qd) and pin GB) of battery terminal
CNJ401.)
2. Supply 9 V dc through external power jack.
3.
If
the
voltage
of
pin
(2)
of
CNJ401
is
7.3
V,
charge circuit is normal.
10 kQ.
(CRASSIS)
Q410
OTAI24EK
Q406 Q407 0408 Q409 0402
2SB624
FMWI
2SAI358
2SB624
1$2835
TP56
CHARGE ABLE VOLT.REG. (GNO}
CURRENT CONTROL (FOR CHARGE )
Fig. B Voltages of Each Part
e
Power
voltage
is
9
V
and
fed
with
regulated
dc
power
supply from DC IN QV (external power) jack.
Readings
are
taken
under
so-signal
conditions
with
a VOM (50 kQ/V).
no mark: stop condition in service mode.
< >: stop. condition on normal operation when
POWER SW is ON by connecting a 10k2
resistor between pin @)and pin (3) of CNJ401.
Voltage variations may be noted due to normal produc-
tion tolerances.
—18—

1-2, BLOCK DIAGRAM
KSS- 1106 (1/2)
OPTICAL PICK-UP BLOCK (FOP)
RF AMP/SIGNAL PROCESSOR
“1C1
MiRR (8)
i
d
i}
$5.24
DETECTOR
TPLRF
5
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TP4
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EFM QO)
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SERIAL NO.
10001-25000
HOLDER
| LASER on
| / ONE THE =)
j 18 SHUT,
AUTOMATIC POWER CONTROL
(LASER ON CIRCUIT)
QI, 12 (1/2)
LS SERVO OFF DET ———~,
LOWPASS FILTER
TP TP 6 TP
53
DE-EMPHASIS
Ic101
mH
MUTING
QoL
DE-EMPHASIS
1C 201
201
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RV301
VOLUME
MUTING
Q201
CD
SWITCH
0301
HEADPHONE
MUTING
102
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|
|
|
|
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FOK DET FooK
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SPINDLE MOTOR
5
OIGITAL SIGNAL
PROCESSOR/
CLV SERVO
Ic60r
RFCK
MOP
1P34
(RFCK)
5
CLV SERVO
CONTROL
SWITCH
Q6OI-604, IC603
IC 302 MDs
O/A CONVERTER
OAIG CRCF
SUBQ
SCOR
<
3 L603 $803
> pict p—iel
3
16k BIT RAM
Ic602
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SWITCHING
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(14) K1 (PB7PAUSE)
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1P35
TP.
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TP32 TP33 5 P43, TP44
{SCOR} (WFCK) CFS (SCOR) {WFCK)
TP62
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$802 (OPEN) #
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roo
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MUTE >——
—«<}+—
0302
<f
———— MUTE DRIVE
Q303
|
een aaa
SERIAL _NO.1000i ~35000
SLEO/SPINDLE MOTOR DRIVE
1503
24) R7 (DIRECT)
@8) P| (MATT)
ND801
LCD MODULE
(18) ROIF OK)
22) RSICLOCK}
(P-CcONIPO Gd
i) R4 (LATCH)
VOLT REG. .
@3) Re (DATA) RF AMP, SIGNAL PROCESSOR, ,.» 5 (row Migeoh) SYSTEM CONTROL,
@)) P3 (RESET) SERVO AMP SECTION ; S08 aoe C804 MUTING SECTION
+5V VOLT. REG.
1€ 802
(7) ReISENSE) DIGITAL SIGNAL PROCESSOR, 5 95, RESET
RAM, MOTOR SECTION 0605 606 ha SIGNAL PRODUCE
(8) Suis POWER ON/OFF 08. Pee
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D/A CONVERTER, | +4-75V
ANALOG SECTION
~4,75V
VOLT. REG,
0402 - 405
(5) sc (WFCK)
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RF
AMe,
SIGNAL
Processor,
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10
(GFS)
SERVO
AMP
SECTION
|
~5.2V
(0)
R13;
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RIPPLE
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HEADPHONE
SYSTEM
CONTROL
AMP.
SECTION
RIPPLE
1¢
801
FILTER
0304
OC-0C
CONVERTER
FOCUS
COIL
or
TRACKING
COIL
|
DRIVE
+9V
SLED
MOTOR
|
SECTION
60
soiF=NODE)
SPINDLE
MOTOR.
{BATT ~ WRI
3
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BATTERY LEVEL CHECK SERIAL NO.
(5) K2 (K-MODE)
1803 5 5 35001 _ANO_LATER
(BATT-E)RO @) 6 foexe
(6) k3 (RENTENT) @ISOLDER JUMPER 1 age Sl
(BATTS (OR eave MODE, |
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RECHARGEABLE
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|
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SWITCH
Q410
(2) R3{MUTE)

SECTION 2
DISASSEMBLY AND REASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
2-1. DISASSEMBLY
BOTTOM PANEL
UPPER PANEL
special head screw
M1.4x 22
upper panel
bottom panel
special head screw
M1.4x 2.2
Switching
special head screw
plate assy
M1.4x 2.2
%@ special head screw
M1.4x2.5
(2) Remove switching plate
assy by sliding in the
direction of arrow.
switching plate assy at
When installing, install
first.
MAIN BOARD AND SW BOARD
SW board
FRONT PANEL
(2 a
ag @ Remove the claw.
io ' Za
special
head
screw
tM
>
M1.4 x 3.0
@ special head screw
M1.4x 2.5 4
special head screw
M14x 2.5
special head screw
M1.4 x 3.0
g
front panel
of
special head screw
M1.4x2.5
(caution on installing)
CABINET
CHASSIS
special head screw
M1.4x 2:0
cabinet
chassis
MECHANICAL SECTION
Note: Be careful not to break flexible board.
If it is broken, FOP should be replaced.
@ screw
O
mechanical
@
special
head
screw
section M1.4x 2.0
: a @ screw
Unsolder flexible
board and remove
in the direction of
arrow.
KC
2 N
Ny Be
LS >IT
SUB BOARD
Unsolder
lead
frame
and
raise
sub
board
up
in
the
direction
of
arrow.
.
[ier
checking
the
voltage,
etc.,
cdr
@ Unsolder flexible
board.
the portions which were connected by
lead frame with lead wires.
MD COVER AND INSULATOR
tapping screw
B1.7x3
MD cover
mechanical
section
insulator
prection screw 4
P2x 3.0 insulator

Refer to NOTE ON HADLING THE OPTICAL
PICK-UP BLOCK (KSS-110G) on page 3.
2-2. MECHANICAL SECTION REASSEMBLY
SPINDLE MOTOR SECTION
prection screw © compression spring
C1) thrust retainer
+P1.7x 4
motor retainer
© prection screw
+P1,.7x 4
@
motor
adjustment
plate
collar (A)
spindle motor
(M902)
© Confirm that motor returns the former state by
the force of spring when pushing motor in the
direction of arrow.
® Apply a drop of hidro fluid
EP-56 (part no. 7-661-018-01)
to a portion marked 6.
@ special head screw
B1.4x 12
toothed belt \
@ special head screw
B1.4x5
@ Set toothed belt to
turntable gear.
@ Set toothed belt
“to motor gear.
After installing, perform the
turntable height adjustment.
chassis assy
@ Tighten retainers. A, B, C, D with respective
screws temporarily.
SHAFTS A, B
The
end
of
shaft
B
optical
pick-up
block
(FOP)
are pointed.
@ Insert shaft A.
@ insert shaft B.
Qe Tighten retainer A firmly.
8 Tighten retainers firmly in order of B, C, D.
@ Lock the screws with locking compound.
FLEXIBLE BOARD AR RANGEMENT
@ Stick flexible board
along the corner,
Arrange flexible board
as shown in the figure.
optical pick-up
block (FOP)
OIL SUPPLY OF SHAFTS A, B
© Apply a drop of hydro fluid EP-56
(part no. 7-661-018-01) to four
portions marked ®.
@ Move FOP right and left two or three |
times to smooth them. '
(3) Lift up mechanical section and incline :
it in the right or left direction. Confirm
that FOP is moved smoothly with
itself-weight. |
t
OPTICAL PICK-UP BLOCK (FOP)
Press portion ® with
a finger in the direction
tapping screw .
B1.4x5 of arrow and tighten the
™F screw. :
iner C wl,
retain 3) cA)
4
tapping screw
BIAXxS
retainer B
| Refer to NOTE ON HADLING THE OPTICAL
PICK-UP BLOCK (KSS-110G) on page 3.
@ Stick adhesive sheet.
8 Set flexible board to
the two posts.
>
optical pick-up
block (FOP)
optical pick-up block (FOP)
When replacing optical pick-up block, confirm and
adjust the following items in the numerical order given.
1. Tracking balance adjustment (page 29)
2. Sled motor offset adjustment (page 29)
3. Focus bias adjustment (page 28)
4, Tracking gain adjustment (page 29)
tapping screw
B14AxS§
retainer D
tapping screw.
B1.4x5
retainer A
SLED MOTOR SECTION
(Feed screw disassembly)
@ feed screw assy
Release hooking.
O belt
~
@ © thrust retainer
sled motor
(M901)
feed disk >.» Solder the lead wire
on the outside of
terminal.
Solder the lead wire on
limit switch the inside of terminal.
(S801)
@ prection screw
P2x 2.5
© prection screw
P2x 2.5
@ feed thrust retainer .
@ tapping screw
4x5
grease (froil G-647) B1.4
part no.: 7-661-002-35,
sled motor section
After installing, perform the
feed screw thrust adjustment.
FEED RACK |
@ tapping screw
B1.4x 5
3 ' @ prection screw
P17 x 5.5
© screw retainer ~ ra) a
: cut portion
@
rack
tT
ye
@ feed rack
upper part: straight
lower part: bent